Protective effects of Portulaca oleracea and vitamin E on cardiovascular parameters in rats with subclinical hyperthyroidism.

Autor: Hadjzadeh MA; Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran., Khodadadi H; Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran., Sohrabi F; Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran., Hedayati-Moghadam M; Student Research Committee, Jiroft University of Medical Sciences, Jiroft, Iran.; School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran., Ghorbani A; Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran., Hosseinian S; Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Jazyk: angličtina
Zdroj: Clinical and experimental hypertension (New York, N.Y. : 1993) [Clin Exp Hypertens] 2022 Oct 03; Vol. 44 (7), pp. 663-669. Date of Electronic Publication: 2022 Aug 16.
DOI: 10.1080/10641963.2022.2112209
Abstrakt: Introduction: Subclinical hyperthyroidism (SHT) is an endocrine disorder that is associated with abnormalities in heart structure and function. Oxidative stress plays an important role in the pathophysiology of cardiac disorders caused by SHT. Portulaca oleracea (P. Oleracea) is a herbaceous plant with many pharmacologic effects including antioxidant, and anti-inflammatory properties. In the present study, the effects of Portulaca oleracea and vitamin E on the biochemical, hemodynamic, and functional parameters of the cardiac tissue was studied in rats with subclinical hyperthyroidism.
Methods: Fifty-six male rats were divided into seven groups: 1-Control group: daily injection of saline, 2-SHT group: daily injection of levothyroxine sodium (LS) (20 µg/kg), 3- T4+Po groups were given LS and P. oleracea (100, 200, and 400 mg/kg in drinking water), 4- the T4+vit E groups received LS and a daily injection of vitamin E (100 and 200 mg/kg). Cardiac index, systolic blood pressure (SBP), also malondialdehyde and total thiol levels were measured in cardiac tissue.
Results: SBP and maximum dP/dt were significantly increased and minimum dP/dt was significantly decreased in SHT group. In P. oleracea groups, maximum dP/dt were significantly reduced and minimum dP/dt was increased. Malondialdehyde levels and cardiac index in groups receiving vitamin E and P. oleracea were significantly decreased. Maximum dP/dt was decreased in the group receiving LS+vitamin E. Minimum dP/dt was significantly higher in group received LS+ vitamin E.
Conclusion: This study showed that Portulaca oleracea has a positive effect on cardiac dysfunction caused by subclinical hyperthyroidism.
Databáze: MEDLINE
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